问题 单项选择题 B1型题

慢性粒细胞性白血病为()。

A.一组起源于淋巴结或其他淋巴组织的恶性肿瘤

B.一种小淋巴细胞克隆性扩展侵润骨髓血液淋巴结和其他器官制造血功能衰竭性疾病

C.一种起源于多能干细胞的肿瘤性增生疾病

D.起源于造血系统干细胞的克隆性恶性疾病

E.多种原因致造干细胞的数量减少和(或)功能异常引起红细胞、中性粒细胞、血小板减少的一个综合病变

答案

参考答案:C

阅读理解

阅读理解 

       Experts(专家) say that students usually need eight to ten hours' sleep at night, but most Chinese

students do not get enough sleep. Some Chinese parents are usually glad to see their children studying

late. They will think their children work very hard. But not all parents think about this. Once a mother

told us that every morning her l0-year-old boy puts up one finger with 'his eyes still closed, begging(乞求)

one more minute to sleep. Like thousands of students "Early Bird " in China,  he has to get up before six

every morning.

       A report shows that if they don't have a good night's sleep, students seem to he weaker than they

should be. Many students have fallen asleep (入睡)during classes. Too much homework is not the only

reason(原因) why students stay up late. Some watch TV or play games late into the night.

       Experts ever say that students should develop (养成)good study habits. So some clever students

never study late, and they are able to work well in class.

1. The l0-year-old boy begs for one more minute to sleep because         .  

A. he doesn't have enough sleep  

B. it isn't the time for him to get up  

C. he doesn't want to go to school  

D. he wants his mother to wake him up

2. In Paragraph l the underlined phrase "Early Birds" means persons who          .

A. get up early  

B. get up late    

C. sleep less    

D. don't want to sleep

3. From the passage we know if students don't get enough sleep, they may          .    

A. not sleep because they are too weak    

B. not learn well in class'    

C. go to bed early    

D. be weak in English

4. The underlined phrase "stay up late"  in Paragraph 2 means "         " .

A. study    

B. watch TV late.    

C. not go to bed until late    

D. stay outside

5. From the passage we can know that        .

A. if you want to study better, you must work hard    

B. sleeping less means working hard    

C. some clever students are able to work well in class because they have good study habits    

D. students don't have enough sleep only because they have a lot of homework to do

单项选择题